We ran the Rivanna River from Rt. 29 to Darden Towe Park yesterday at just under 100cfs on the Palmyra gauge. There was no water spilling over the S. Rivanna Reservoir dam.
We bumped and scraped and I had to get out of the boat once to walk it, but we still had a very enjoyable time.

I would, however, not recommend running it at this level unless you have a lot of time and patience.